Ответ:

  1. \(84-(36+24):3\cdot2=84-60:3\cdot2=84-20\cdot2=44\).
  2. \(187-(87-40-17)\cdot2=187-30\cdot2=127\).
  3. \((85-53)-(28+16):4=32-44:4=21\).
  4. \(271\cdot3=813\).
  5. \(408:2=204\).
  6. \(129\cdot4=516\).
  7. \(28:4\cdot12=7\cdot12=84\).
  8. \(48:8\cdot13=6\cdot13=78\).
  9. \(35:5\cdot14=7\cdot14=98\).